The Online Books Page

Cryptography

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• Signs and symbols
• Symbolism
• Writing

• Ciphers
• Data encryption (Computer science)

• Cryptography -- Bibliography
• Cryptography -- Handbooks, manuals, etc.
• Cryptography -- Military aspects
• Cryptography -- Textbooks
• Cryptography -- United States
• Cryptographers
• Cryptography in literature
• Korean War, 1950-1953 -- Cryptography
• Poe, Edgar Allan, 1809-1849 -- Knowledge -- Cryptography
• Vietnam War, 1961-1975 -- Cryptography
• World War, 1914-1918 -- Cryptography
• World War, 1939-1945 -- Cryptography

• Cryptanalysis
• Cryptology
• Secret writing
• Steganography

• Military Cryptanalysis (4 volumes originally issued 1938-1941; declassified version published 2005), by William F. Friedman (PDF files at nsa.gov)
• Mathematics and Computation: A Theory Revolutionizing Technology and Science (prepublication version, c2019), by Avi Wigderson (PDF with commentary at ias.edu)
• Cryptography and Data Security (Reading, MA et al.: Addison-Wesley, c1982), by Dorothy Elizabeth Robling Denning (PDF at npos.edu)
• Cracking DES: Secrets of Encryption Research, Wiretap Politics and Chip Design (1998), by Electronic Frontier Foundation (HTML at cryptome.org and other sites)
• Cryptography's Role in Securing the Information Society (prepublication copy), ed. by Kenneth Dam and Herbert Lin (HTML and page images at NAP)
• Cracking Codes with Python, by Al Sweigart (illustrated HTML with commentary at inventwithpython.com)
• The Mathematical and Philosophical Works Of the Right Reverend John Wilkins (London: Printed for J. Nicholson, 1708), by John Wilkins (page images at Google)

• An Historical and Analytical Bibliography of the Literature of Cryptology (Northwestern University studies in the humanities #10; Evanston: Northwestern University Press, c1945), by Joseph S. Galland (PDF with commentary at Northwestern)

• Handbook of Applied Cryptography, by Alfred J. Menezes, Paul C. Van Oorschot, and Scott A. Vanstone (PDF and Postscript files with commentary at Waterloo)

• Basic Cryptanalysis (FM 34-40-2, 1990), by United States Army (PDF and Postscript files at Michigan)

• The Joy of Cryptography (2021), by Mike Rosulek (PDF with comentary at joyofcryptography.com)

• It Wasn't All Magic: The Early Struggle to Automate Cryptanalysis, 1930s-1960s (originally published by NSA Center for Cryptologic History, 2002; redacted declassified version released 2013), by Colin B. Burke
  • PDF at governmentattic.org
  • multiple formats at archive.org

• The Venona Story (Fort George G. Meade, MD: Center for Cryptologic History, ca. 2001), by Robert Louis Benson (PDF at nsa.gov)
• American Cryptology During the Cold War, 1945-1989 (4 volumes; declassified redacted version, published 1995-1999), by Thomas R. Johnson
  • Book 1 (1945-1960): PDF at nsa.gov
  • Book 2 (1960-1972): PDF at nsa.gov
  • Book 3 (1972-1980): PDF at nsa.gov
  • Book 4 (1981-1989): PDF at nsa.gov

• The Korean War: The SIGINT Background (2000), by David A. Hatch and Robert Louis Benson (HTML at nsa.gov)
• The Origins of the National Security Agency, 1940-1952 (United States Cryptologic History, series V, volume 1; declassified redacted version; 1990), by Thomas L. Burns (PDF at nsa.gov)

• Venona: Soviet Espionage and the American Response, 1939-1957 (1996), ed. by Robert Louis Benson and Michael Warner (PDF files with commentary at cia.gov)

• Code Talkers: Hearing Before the Committee on Indian Affairs, United States Senate, One Hundred Eighth Congress, Second Session, on Contributions of Native American Code Talkers in American Military History (Washington: GPO, 2004), by United States Senate Committee on Indian Affairs
  • PDF at govinfo.gov
  • page images at HathiTrust

• The Cryptographic Imagination: Secret Writing from Edgar Poe to the Internet (originally published 1997; open access edition Baltimore: Johns Hopkins University Press, 2019), by Shawn Rosenheim (HTML and PDF files with commentary at Project MUSE)

• So Power Can Be Brought Into Play: SIGINT and the Pusan Perimeter (originally published 2000), by Jill Frahm (HTML at nsa.gov)

• The Cryptographic Imagination: Secret Writing from Edgar Poe to the Internet (originally published 1997; open access edition Baltimore: Johns Hopkins University Press, 2019), by Shawn Rosenheim (HTML and PDF files with commentary at Project MUSE)

• The Most Secret War: Army Signals Intelligence in Vietnam (Fort Belvoir, VA: Military History Office, US Army Intelligence and Security Command, 2003), by James L. Gilbert (page images at HathiTrust)
• Spartans in Darkness: American SIGINT and the Indochina War, 1945-1975 (US cryptologic history series VI v. 7, declassified redacted version (2007); with supplementary file of additional declassified portions released 2008), by Robert J. Hanyok (PDF files with commentary at fas.org)

• Code Talkers: Hearing Before the Committee on Indian Affairs, United States Senate, One Hundred Eighth Congress, Second Session, on Contributions of Native American Code Talkers in American Military History (Washington: GPO, 2004), by United States Senate Committee on Indian Affairs
  • PDF at govinfo.gov
  • page images at HathiTrust

• Eavesdropping on Hell: Historical Guide to Western Communications Intelligence and the Holocaust, 1939-1945 (second edition; Fort George G. Meade, MD: Center for Cryptologic History, National Security Agency, 2005), by Robert J. Hanyok (PDF at nsa.gov)
• Code Talkers: Hearing Before the Committee on Indian Affairs, United States Senate, One Hundred Eighth Congress, Second Session, on Contributions of Native American Code Talkers in American Military History (Washington: GPO, 2004), by United States Senate Committee on Indian Affairs
  • PDF at govinfo.gov
  • page images at HathiTrust
• The Cryptographic Imagination: Secret Writing from Edgar Poe to the Internet (originally published 1997; open access edition Baltimore: Johns Hopkins University Press, 2019), by Shawn Rosenheim (HTML and PDF files with commentary at Project MUSE)

Items below (if any) are from related and broader terms.

• Military Cryptanalysis (4 volumes originally issued 1938-1941; declassified version published 2005), by William F. Friedman (PDF files at nsa.gov)
• The Voynich Manuscript: An Elegant Enigma (Fort George G. Meade, MD: National Security Agency/Central Security Service, 1978), by M. E. D'Imperio (page images at HathiTrust)
• Fundamental Principles of the Baconian Ciphers, and Application to Books of the Sixteenth and Seventeenth Centuries (typescript version; c1916), by George Fabyan
  • multiple formats at archive.org
  • page images at HathiTrust
• Fundamental Principles of the Baconian Ciphers and Application to Books of the Sixteenth and Seventeenth Centuries (ca. 50-page printed version; c1916), by George Fabyan
  • multiple formats at archive.org
  • page images at HathiTrust; US access only
• Lessons in the Greatest Work of Sir Francis Bacon of Verulam, Viscount St Alban (expanded version of his "Fundamental Principles of the Baconian Ciphers..."; c1916), by George Fabyan
  • multiple formats at archive.org
  • page images at HathiTrust; US access only
• Cracking Codes with Python, by Al Sweigart (illustrated HTML with commentary at inventwithpython.com)

• Voynich manuscript
  • page images at Yale
  • multiple formats at archive.org

• The Biliteral Cipher: Hints for Deciphering (London: R. Banks and Son, ca. 1890), by Mrs. Henry Pott (page images at HathiTrust)

• Learning the Radiotelegraph Code (first edition; West Hartford, CT: American Radio Relay League, 1942), by John Huntoon (page images at HathiTrust; US access only)
• The Anglo-American Telegraphic Code to Cheapen Telegraphy and to Furnish a Complete Cypher (third edition; New York: Anglo-American Code and Cypher Co., 1891)
  • page images at Google; US access only
  • multiple formats at archive.org
• The Phillips Telegraphic Code for the Rapid Transmission by Telegraph of Press Reports, Commercial and Private Telegrams, and All Other Matter Sent by Wire or Cable (Washington: Gibson Bros., 1879), by Walter P. Phillips (page images at HathiTrust)

• Wired Love: A Romance of Dots and Dashes (ca. 1879), by Ella Cheever Thayer (Gutenberg text)

• The Cryptographic Imagination: Secret Writing from Edgar Poe to the Internet (originally published 1997; open access edition Baltimore: Johns Hopkins University Press, 2019), by Shawn Rosenheim (HTML and PDF files with commentary at Project MUSE)

• Masters of Space: Morse and the Telegraph; Thompson and the Cable; Bell and the Telephone; Marconi and the Wireless Telegraph; Carty and the Wireless Telephone (1917), by Walter Kellogg Towers (Gutenberg text)
• The Telegraph Monopoly (Philadelphia: C. F. Taylor, ca. 1899), by Frank Parsons (page images at HathiTrust)
• Samuel F. B. Morse: His Letters and Journals (2 volumes; 1914), by Samuel Finley Breese Morse, ed. by Edward Lind Morse
  • Volume I: Gutenberg text
  • Volume II: Gutenberg text
• A School Compendium of Natural and Experimental Philosophy (New York: A. S. Barnes and Co., 1856), by Richard Green Parker (page images at MOA)

• Lightning Flashes and Electric Dashes: A Volume of Choice Telegraphic Literature, Humor, Fun, Wit and Wisdom (third edition; New York: W. J. Johnston, c1882), ed. by W. J. Johnston (page images at HathiTrust)

• Proceedings of the California Academy of Sciences at a Reception Given to the Captain and Officers of the Jeannette Search Expedition (San Francisco, 1881), by California Academy of Sciences (page images at LOC)

• Lectures Delivered by Colonel Candido Mariano da Silva Rondon, Chief of the Commission, on the 5th, 7th and 9th of October 1915 at the Phenix Theatre of Rio de Janeiro, on the Roosevelt-Rondon Scientific Expedition and the Telegraph Line Commission (Rio de Janeiro: Typ. Leuzinger, 1916), by Cândido Mariano da Silva Rondon, trans. by R. G. Reidy and Ed. Murray (page images at HathiTrust; US access only)

• Heroes of the Telegraph, by John Munro (Gutenberg text)

• Lightning Flashes and Electric Dashes: A Volume of Choice Telegraphic Literature, Humor, Fun, Wit and Wisdom (third edition; New York: W. J. Johnston, c1882), ed. by W. J. Johnston (page images at HathiTrust)

• The Motor Boat Club and The Wireless: or, The Dot, Dash and Dare Cruise (Philadelphia: H. Altemus Co., c1909), by H. Irving Hancock (Gutenberg text and illustrated HTML)

• Electrical Communication (partial serial archives)

More items available under broader and related terms at left.